Perhaps you can help me?

On checking the obit for Mrs. Locke RICHARDSON (nee Elizabeth G. USHER) in the newspaper of Brantford, Ontario, Canada, I have discovered that she passed away in Greenwich, on October 12, 1931. This info has come as a complete surprise to me and I wonder if anyone can suggest sources that I could check to confirm the details.
I appreciate any suggestions you may have for me.

Judy in Canada